A German scientist made a coronavirus test back in January, and shared it with the world to give countries outside China a head-start on beating the disease. But if a test can be developed so quickly, why are some countries still struggling?

A German scientist made a coronavirus test back in January, and shared it with the world to give countries outside China a head-start on beating the disease. But if a test can be developed so quickly, why are some countries still struggling? https://t.co/eRliaPuoB6

— CNN (@CNN) March 29, 2020